The solubilities of beta-cyclodextrin (beta-CD), ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), and their mixture in water were determined, and the conductivity of these aqueous solutions was measured. It was demonstrated that beta-CD and bmimPF6 could enhance the solubility of each other, and the solubility curves of each were linear with gradients of about 1. The conductivity decreased remarkably with increasing beta-CD concentration, and a discernible break in the conductivity curve could be observed when beta-CD and bmimPF6 were equimolar in the solution. The solubility and conductivity results indicated that inclusion complexes (ICs) of 1:1 stoichiometry were formed. The inclusion compounds were further characterized by using powder X-ray diffraction (XRD) analysis, 13C CP/MAS (cross-polarization magic-angle spinning) NMR and 1H NMR spectroscopy, and thermogravimetric analysis (TGA). The results showed that the ICs were a fine crystalline powder. The host-guest system exhibited a channel-type structure and each glucose unit of beta-CD was in a similar environment. The decomposition temperature of the ICs was lower than that of bmimPF6 and beta-CD individually.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/chem.200500120 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Automatic multimodal registration of cone-beam computed tomography and intraoral scans: a systematic review and meta-analysis.
Clin Oral Investig
January 2025
Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, China.
Objectives: To evaluate recent advances in the automatic multimodal registration of cone-beam computed tomography (CBCT) and intraoral scans (IOS) and their clinical significance in dentistry.
Methods: A comprehensive literature search was conducted in October 2024 across the PubMed, Web of Science, and IEEE Xplore databases, including studies that were published in the past decade. The inclusion criteria were as follows: English-language studies, randomized and nonrandomized controlled trials, cohort studies, case-control studies, cross-sectional studies, and retrospective studies.
How Are Dehumanizing Perceptions of Homelessness Associated with Age?
Gerontologist
January 2025
Department of Gerontology: Aging and Adulthood, Western Oregon University, Monmouth, OR, USA.
Background And Objectives: Increasing numbers of unhoused older individuals in the U.S. underscores the urgency for tailored services and support.
View Article and Find Full Text PDFThe Folk Concept of Nursing in Australia: A Decolonising Conceptual Analysis.
Nurs Philos
January 2025
Ngarruwan Ngadju, University of Wollongong, Wollongong, Australia.
This article presents a conceptual analysis of the contemporary understanding of NURSING in Australia and proposes strategies for decolonisation. Through historical reflection and the lens of cultural safety and critical race theory, it examines some conditions which make up this concept, including "Florence Nightingale-influenced practices," "intellectual practitioners," and "whiteness in nursing." This analysis aims to identify conditions which we take to be necessary for the folk concept of NURSING to be satisfied and which result in negative outcomes.
View Article and Find Full Text PDFWhat Is the State of the Literature About Refugees Aged 45 and Older from Burma in Third-Country Resettlement Contexts?: A Scoping Review.
Gerontologist
January 2025
School of Social Work, University of Texas at Arlington, Arlington, Texas, United States.
Background And Objective: Older adult refugees from Burma face unique challenges in third-country resettlement, yet their experiences are often overlooked in research and policy. This scoping review aims to examine the literature on refugees aged 45 and older from Burma in third-country resettlement contexts, identify factors contributing to successful integration, and elucidate the unique challenges they encounter.
Research Design And Methods: We systematically searched seven databases using Arksey and O'Malley's framework.
Comparative evaluation of trimethylated α-, β-, and γ-cyclodextrins as optimal dispersants for ready biodegradability testing of poorly water-soluble substances.
J Pestic Sci
November 2024
Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University.
We investigated whether various modified cyclodextrins (CDs) and emulsifiers could be applied as dispersing agents in ready biodegradability tests of poorly water-soluble substances. Trimethylated α-, β-, and γ-CDs and partially methylated β-CD were not biodegraded in the test period but accelerated the biodegradation of octabenzone and anthraquinone. The process by which trimethylated α-, β-, and γ-CDs enhance the biodegradation of test substances has been partially uncovered.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!